phylo2vec.utils.vector.get_common_ancestor

phylo2vec.utils.vector.get_common_ancestor(vector_or_matrix, node1, node2)

Get the most recent common ancestor between two nodes in a Phylo2Vec tree.

node1 and node2 can be leaf nodes (0 to n_leaves) or internal nodes (n_leaves to 2*(n_leaves-1)).

Similar to get_common_ancestor in ETE, but for Phylo2Vec vectors/matrices.

Note: The MRCA is purely topological, so for matrices, only the vector component (column 0) is used.

Parameters:

• vector_or_matrix (numpy.ndarray) – Phylo2Vec vector (ndim == 1) or matrix (ndim == 2)

• node1 (int) – A node in the tree

• node2 (int) – A node in the tree

Returns:

mrca – Most recent common ancestor node between node1 and node2

Return type:

int